1function d = lastobservedperiod(o) % --*-- Unitary tests --*--
2
3% Returns the last period where all the variables are observed (last period without NaNs).
4%
5% INPUTS
6% - o [dseries]    with N variables and T periods.
7%
8% OUTPUTS
9% - b [dates]      Last period where the N variables are observed (without NaNs).
10
11% Copyright (C) 2017 Dynare Team
12%
13% This file is part of Dynare.
14%
15% Dynare is free software: you can redistribute it and/or modify
16% it under the terms of the GNU General Public License as published by
17% the Free Software Foundation, either version 3 of the License, or
18% (at your option) any later version.
19%
20% Dynare is distributed in the hope that it will be useful,
21% but WITHOUT ANY WARRANTY; without even the implied warranty of
22% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23% GNU General Public License for more details.
24%
25% You should have received a copy of the GNU General Public License
26% along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
27
28b = ~isnan(o);
29c = find(prod(double(b), 2));
30if isempty(c)
31    error('No overlapping non-NaN data points found in dseries.');
32end
33d = firstdate(o)+(c(end)-1);
34
35%@test:1
36%$ try
37%$     ts = dseries([NaN, NaN; NaN, 1; 2, 2; 3, 3; 4, NaN; 5, 5]);
38%$     dd = ts.lastobservedperiod();
39%$     t(1) = true;
40%$ catch
41%$     t(1) = false;
42%$ end
43%$
44%$ if t(1)
45%$     t(2) = isequal(dd, dates('6Y'));
46%$ end
47%$
48%$ T = all(t);
49%@eof:1
50
51%@test:2
52%$ try
53%$     ts = dseries([0, 0; NaN, 1; 2, 2; 3, 3; 4, NaN; 5, NaN]);
54%$     dd = ts.lastobservedperiod();
55%$     t(1) = true;
56%$ catch
57%$     t(1) = false;
58%$ end
59%$
60%$ if t(1)
61%$     t(2) = isequal(dd, dates('4Y'));
62%$ end
63%$
64%$ T = all(t);
65%@eof:2
66